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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<script>
      function objseTis(obj) {
        var str = ''
        for (var key in obj) {
            str += `${key}=${obj[key]}&`
        }
        return str.slice(0, str.length-1)
    }
    function ajax(method, url, params, cd) {
        // 1.创建一个xhr对象
        var xhr = new XMLHttpRequest()

        //2.配置xhr对象
        xhr.open(method, url + "?" + objseTis(params))
        //3.用回调函数来接收返回的响应
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4) {
                cd(JSON.parse(xhr.responseText));
            }
        }
        //4.发送请求
        xhr.send()
    }

    //渲染第一页

    ajax('get', `https://yantianfeng.com/api/emotion`, { page: 1, count: 5 }, function (data) {
        console.log(data);
    })
</script>